Oil burner



Jan. 29,1924.

I. M. SHARP OIL BURNER Filed Aug. 1, 1921 3 Sheets-Sheet 1 IN VENTOR .Z- M. Sa an.

WITNESS V A TTORNEYS Jan. 29, 1924. 1,482,269

I. M. SHARP on. BURNER Filed Aug.v 1', 1921 47 3 SheetsShee t 3 I 4 i r3 w 7.9 I 69 ,29 \V a? a 6 6 4 49 I I I R 7 "76 v 6 i i 8v l 1 r In I; 6 F75 7- i 44 i" 3 L ly/ 77 WITNESS Y Y '.f i r v j v J '7 INVENTQR V I 1/7: my.

ATTORNEYS Patented an. 2a, 1924'.

terate OIL BURNER.

-App1ication filed August 1, 1921. Serial No. 488,968.

To all whom it may concern:

Beit known that I, IsAAc 'M. SHARP, a citizen of the United 'States, residing at the city and county ofSan Francisco and State a of California, have invented certain new and useful Improvements in Oil Burners, of which the following is a specification.

The present invention relates to an improvement in oil burners, particularly that type employing ahorizontal rotary distributing cup and an air pressure means enabling the supplying to a fire box of a finely divlded oil spray for intermixture with the required air for combustion.

One of-the objects of the present invention is to provide a burner tip and cup construction capable of a double movement when inserted into or removed from a'fire box opening, whereby the are of the swing 2 of the tip and on is materially reduced over other devices operating in this manner. A further object is to provide asuperheater for the oil in the form of a closure plate for] the furnace wall opening, whereby the oil is 2 superheated while passing through said closure plate and prior to discharging'into the cup. Another object is the providing of a horizontal fulcrum for the burner formed as part of the upper half of the blower casing,

' 3" providing an integral rigid structure afiording a secure mount for the burner and automatic control. Other-objects are the provlsion of an improved base for the blower which also afiords a support for the motor and for the oil pump and constitutes the 7 lower half of the blower casing.

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings and pointed out in the claims hereto appended; it being under- Stood that various changes in the form, pro .portion, size and minor details of construce c5 tion within the scope of the claims may be resorted to without departing from the spirit .or sacrificing any of the advantages of the invention.

To more fully comprehend the invention,

reference is directed to the accompanying drawings, wherein- Fig. 1 is a view in elevation, partly in section, .of the preferred embodiment of my in-' vention, disclosing more particularly the blower discharge affording the fulcrum for the burner.

Fig. 2 is a view in side elevation, disclosing more particularly the superheater associated with the burner 'and the detachable fuel feed connection between the supply and burner, permitting the withdrawal or longitudinal movement of the tip and cup within the burner. y l

Fig. 3 is a top plain view, partly in section, on line 3-3 of Fig. 2, disclosing more particularly the mounting for the burner cup and the air tip for providing concentric strata of air currents discharging from the tip. 7

Fig. 4 is a broken detail view taken on line 4-4 of Fig. 3, illustrating the automatic mechanism for cutting ofl the fuel'supply' when the burner is swung fromlthe furnace opening. a

Fig. 5 is a view in elevation of the cup operating worm or screw.

Fig. 6 is a fragmentary view in side elevation of the cup operating worm or screw. Fig. 7 is a vertical sectional view of the Y automatic valve arrangement in the detacha0 able coupling of the oil feed line taken on line 77 of Fig. 2.

Referring more particularlyto the drawings, wherein like characters of reference designate corresponding parts, 1 indicates an elongated base or support, preferably of cast metal, transversely of WhlCh is formed the lower half section 2 of a blower casing 3, said casing being of conventional form. At one end said support 1 mounts a motor 4, and at its opposite end a suitable liquid pump 5 provided with an inlet 8 and an out-- let 7. A shaft 8 extends from the motor armature and connects through a coupling 9 with a shaft 10 having geared connection within a housing 11 with the pum 5, and said shaft 10 also mounts a fan or b ower 12 within the casing 3. The lower half 2 of the blower case 3 mounts and has bolted thereto, as at 13, the upper half 14 of the blower casing 3, which portion is provided with-a vertical discharge pipe 15 of; relativel large diameter through whicii'the air is flirced from said casing 3 by the operation of the fan 12. Air is admitted into the casing 3 at a point surrounding the shaft 10 at one side of the casing through an inlet open ing 16, and into said opening project the ion - integral with the outer end of which is:

lateral extensions 17 extending from one edge of certain of the blades 18, which are supported at their .opposite edge by the blades instead of being drawn over the blower housing.

The upper end of the vertical discharge pipe is provided with an annular supporlh ing shoulder 20 on which rests. the lower terminal edge 21 of the vertically disposed inlet for the tubular burner mounting arm 22, the opposite end of which is curved or bent at right angles, as at 23, to the body of the arm 22 and is disposed in a plane at substantially from the plane 0 the portion 21.

Threaded as at 24 to the end 23 of the arm 22 is a tubular coupling or member 25 formed a radially extending channeled casting 26 the relatively flat front wall 27 of which isadapted to contact with and provide a closure for they outer end of the opening 28 in the fire box wall 29. p

The fuel oil for burning within the fire box is fed to the preheating chamber 30 of the member 26 in the following manner.

From the outlet pipe 7 of the pump 5 extends a vertical pi e31 disposed in parallel relation with the blower outlet'15, and the same carries adjacent said flange 20 a valve casing 32 within which is mounted a conventional valve having a stem 33, the valve casing being secured to a boss 34 at the upper end of the pipe 15. Upwardly from the valve casing 32 extends a pipe 35 connected through an elbow 36 with a short pipe section 37 threaded into a casting 37 formed with a verticalopening adapted to align under certain conditions with an openin 38 formed in aplug 39 which is threaded into a recess in the top wall of the arm 22, as in Fig. 4.

A bolt 40 extends through an opening in the member 37 and threads into the member 39, providing with said flange 20 and portion 21 a fulcrum for the upper and lower surfaces of said arm 22enabling the same to be readily swung on a vertical axis without liability of the samebecoming detached from its support.

The opening 38 in the plug 39 communicates with one end of a longitudinally disposed channel 41 in the upper surface of the arm 22 and into the discharge end of said channel is threaded a fitting 42.

The fitting is of the double channeled type and with the channel 43 afiording an outlet for the oil in channel 41 is connected a pipe 44 communicating with the chamber 30' at ia oint below the chamber dividing wall 45 and from another portion of said chamber extends a pipe 46 connecting with the outlet or discharge channel 47 of the fitting 43, as illustrated in Figs. 2 and 7' of the drawings. 1

The discharge of the oil from the channel 47 is controlled by a valve 48 normally forced by a spring 49 to rest on a seat 50, and the stem 51 of said valve is at its outer end provided with a releasing pin 52 for the hereinafter described purpose.

Longitudinally movable within the tubular coupling or member 25 and within the portion 23 of the arm 22 is the inner end of a tubular burner tip 53 carried'by the peripheral surface 54 of a hub 55 which mounts the surface 54 on webs or spiders 56 radially extending therefrom.

I F orwardly from the hub 55 extends a tubular cup supporting spindle 56, which rotatably mounts on bearmgs 57 held in place by a nut 58, a screw casing or hub 59, which carries on its periphery a spirally extended radially disposed worm or screw 60 formed in its rear face with the grooves or depressions 51 disposed radially to the axis of rotation of said hub 59.

Threaded to the outer end of the hub 59 is a burner cup 62 of the well known conwhich projects beyond the end 64 of a detachable end ring or portion 65 which surrounds the end of the cup 62' and is threaded'as at 66 to the end of member 53. p

The outer end of said ring 65 is annularly grooved as at 67 and said groove connects with the interior of the member 53 at a point near the free end of the cup 62 through a plurality of air passages "69, this construction being particularly illustrated in Fig. '3 of the drawings.

,Air under pressure, forced by-the blower into the member 25, strikes against the spiral or worm 60 and is thrown therefrom in a complete whirling volume, driving the cup in an opposite direction, thereby increasin the atomizing force of the air as it leaves t e space A between the inner surface of the ring 64 and the, outer end of the cup 62 immediately within the, bell portion 63 thereof. This contracted portion A causes a high velocity. to be imparted to the air and causes a slight creation of pressure within the member 53 surrounding the cup 62, a portion of which passes through the apertures 68 and discharges from the anverging into the inner one at a point re- 7 moved from the end of the cup 62, and

' which air volumes 69 is a tubular fitting 7610f the elbow t ick up the radially thrown oil film as it eaves the bell 63 and direct the same, completely atomized, in a direction outwardly from the member 53.

To enable the telescoping or inward move.- ment of the member "53 within the members 23 and 25, when it is desired to swing the burner from the opening '28, and to further provide a controllable oil feed for the tubular spindle 56, I thread to the rear of the hub 55 a pipe 69 longitudinally movable in a tubular guide 70 within the arm 22, and said pipe extends through a threaded boss 71 and carries an annular bevelled a suitable nut 73 .having an accentuate pitch connection 74 with the boss71, and said nut carries a handle gri portion 75; this enabling the read detac ing and connection of the nut on t e boss 71.

Threaded to the extreme'end of the pipe mounting at its lower end a needle va ve 77 for controlling the opening at the outer end of the ipe 69, and the upper end of said elbow tting i formed with a conical recess 78 for overlying the conical end of the outlet channel 47, as in Fig. 7, and providing a friction joint between the two members. The u per end of the fitting-7 6 is normally close y a spring pressedvalve 79, the stem 80 of which is, provided with an extension 81, adapted on the connection of the members 43 and 76 to contact with the portion 52 of valve 48 and affording a through assage-from the pipe 46 into the pipe 69 or the preheated oil prior to discharging into the cup 62. v r

The release of the nut 74 to telescope the member53 within the members 23' and 25, will permit of the breaking of the connection at the upper end of member 76, and the valves 48 and 79 will be automatically seated, thereby preventing any flow of fuel through said broken connection, and the vertical portion of said fitting 76 will afi'ord a handle for moving the member 53 within said members 25'and 23.

Within the outlet 15, if desirable, may

be mounted a dam'per 82,'and with the stem 83 of which is connected within its length a lever 84 attached at one end through a chain'85 with a draft damper or door 86 associated with the fire box. 'Theopposite end of the lever connects through a link ,87 with a second. lever 88 secured to the valve'stem 33 and operating between adjustable stops 89. .The opposite end of the lever 88 connects through a member 90 with a suitable stem operateddevice associated with the fire box boiler, whereby on the steam within the boiler attaining a given pressure. the various levers are operated to.

reduce the flow of oil; reduce the flow of laterally therefrom and at one end resting on said pipe and adapted to swing thereon V on a vertical axis, a burner associated with the other end of said arm and extending at substantially right angles therefrom, means for forcing air through said blower casing to said burner, and means for supplyin oil to the burner.

2. 1 oil burner, consisting of a blower casing provided with a vertically disposed discharge pipe, a tubular burner supporting arm, providing an air passage disposed laterally therefrom and at one end resting on and supported by said pipe to swing thereon on a vertical axis, a burner extending at substantially right angles from the ot er end of said arm and capable of telescopic movement within the same, means for forcing air through-said blower casing to said burner, and means for supplying oil ment with the fire box opening, a burner including a burner tip and rotary cup mounted for operative telescopic movement within the free end of the arm, said burner adapted for operative extension to project from the free end of the arm into the fire box opening and preclude movement of the arm from registry therewith. 4. In combination with a fire box openmg, a burner supporting arm formed at one end with an angularly bent portion and fulcrumed at its opposite end adjacent to said opening to permit its free end to swing 'in an arcuate path into registering alignment with the fire box opening, a burner within the bent portion and longitudinally movable therein, said burner including a rotating cup and a burner tip, and means for telescopically moving the burner relatively'to the free end of the bentportion of the arm, said burner when extended precluding the swinging movement of the arm from registering alignment with the fire box opening.

5. An oil burner, comprising a tubular burner supporting arm afi'ording an air supply pipe mounted at one end to swing on a vert cal axis, a-shell projecting horiiontally fromthe opposite end thereof at j rightangles thereto, a cup rotatably mountd within the shell, said cap and shell adapted for simultaneous telescopic movement within said arm, means for supplying oil to the cup, and means for supplying airto said pipe to cause the rotation of the cup and to intermix with the oil discharging thereform.

6. An oil burner, comprisin a tubular burner supporting arm afior mg an air supply pipe mounted at one end to swing on a vertical axis, a burner shell projecting from the opposite end thereof and adapted for telescopic movement therein, a cup rotatably mounted within the shell, a

spindle supporting the cup, an oil feed pipe.

for supplying oil to the cup through the spindle and extended exteriorly of said air supply pipe, said oil feed pipe affording a means for imparting simultaneous telescoping movement of said shell and cup as a unit within said arm, means for supplying oil to said pipe, and means for supplying air to said air supply pipe 7. An oil burner, comprising a burner shell, :1 cup rotatably mounted therein with its wall in slight spaced relation to the burner shell wall roviding a primary annular air escape t 'erebetween. an air actuated impeller associated with the cup,means for supplying air under pressure into the shell for actuating said impeller, means for supplying oil to the interior of said cup, and a ring carried by the outer end of said shell and formed with an annular air escape channel opening through its end wall, said rin'g provided with a plurality of openings for permitting the passage of air from the space between said shell and cup into said annular air escape channel.

8. An oil burner, comprising a hollow shell, a cup rotatably mounted therein with its end terminating approximately at the end of said shell, means for supplying, air under pressure to said shell for rotating said cup therein, means for supplying oil to the cup, and a ring secured to the end of said shell and provided in its outer end wall with an annular channel, said ring being rovided with a plurality of air inlet open-.

mgs connecting the inner end of said channelwith the interior of'said shell whereby a portion of the air supplied to said shell is caused to issue through said annular channel, the walls of said shell and the walls of said channel being so disposed as to direct the air stream issuing therefrom to intersect the axisof rotation of the cup at a point removed from in front of said burner.

9. An oil burner, comprising a 'burner tip for projecting throu h a fire-box wall opening, means for fee ing air and oil under pressure to the burner to discharge from said tip into the fire-box through said wall 0 ening, and a heating chamber through w ich the oil passes prior to discharging from said tip, said chamber extending radially from the burner and the wall affording a closure for said wall opening and ada ted to be heated by the reflex heat from said fire-box.

'10. An oil burner, comprising a tubular burner supporting arm mounted at one end to swing on a vertical axis, a burner extended horizontally at right angles from the other end of said tubular arm and adapted I burner supporting arm mounted at one end to swing on a vertical axis, a burner extended horizontally at right anglesfrom the other end of said tubular arm, and adapted for arcuate swinging movement with said arm for positioning within and removal from a fire-box wall opening, a heating chamber cast integral with said arm and extended radially therefrom in a plane at right angles from the line of passage of the burner, said heating chamberwall adapted to close the fire-box wall opening and to be heated by the reflex heat from said fire-box, and means for feeding air and oil to said burner.

. 12. In combination with a liquid fuel burner, a tubular support therefor and lougitudinally within which said burner is adapted for telescopic movement, said support affording an air supply for the burner,

.a pipe extendin'g through the tubular support and afi'ordin the air supply for the burner, a detacha le coupling within said ipe adapted for separation to permit the ongitudinal telescopic movement of said burner within said support a valve in said pipe at one side of said coupling and adapted 'for closing on the separating of said coupling, whereby the discharge of oil from said pipe is cut off, and means for feeding air and oil to the-burner.

13. In combination with a liquid fuel burner, a tubular support therefor and 1011-. gitudinally within which said burner is adapted for telescopic movement, said support affording an air supply for the burner,

a pipe exten ng through the tubular support and affordin an air supply for the burner, a detacha le cou ling within said ipe adapted for separatlon to permit the ongitudinal telescoping movement of said burner within said support, and a pair of valves in said ipe one at each side of said coupling and a apted for automatically closamazes ing on the separating of said coupling where by the discharge of oil from opposite sides of said coupling is precluded, and means for feeding air and oil to the burner.

14. In combination with a liquid fuel burner a tubular supporttherefor and longitudinally within which said burner is adapted for telescopic movement, said support affordin an air supply for the burner, a pipe extending through the tubular support and afiording the air supply for the burner, a.

detachable coupling within said pipe adapted for separation to permit the longitudinal telescopic movement of said burner within said support, an automatic valve in said pipe at one side of said coupling, said valve being normally unseated during the attachment of 1 said coupling, and for automatically seating onthe separatin of said coupling to shut off the discharge 0 oil therefrom, and means for supplying air and oil to the burner.

15. In combination, a base, an oil pump supported at one end thereof, a motor at the other end thereof, a blower casing positioned between said motor and pump and consisting of upper and lower sections, the lower section being cast integral with said base and said upper section resting on said lower section and provided with a vertij forsu plying shell,

cally disposed discharge pipe extended therefrom, an oil burner, a tubular supporting arm therefor extending laterally therefrom and co-operating at its opposite end with said discharge pipe whereby a support and a vertical fulcrum are provided for said arm, an,oil pipe extending parallel with said casin discharge pipe, an oil 'conductin channe within said am leading to said urner, a coupling connection between said pipe and channel in alignment with the axis of fulcrumof said arm, said coupling provided with passages adapted for movement out of register to interrupt theoil flow into said channel on the swmging'of said arm toa predetermined sition, and a blower in said casing. 16. n combination with a tubular burner shell, an elongated cylinder mounted therein, bearings supporting said cylinder at-its op osite ends, an impeller vane extending tom the periphery of'said cylinder and disposed spirally about the same betweensaid bearings, a cup carried by the end'of the cylinder and rotatable therewith,

means for supplying air to said shell for rotating said cyl nder and cup, and means oil to the cup.

n com ination with a tubular burner an elongated cylinder rotatabl mounted therein, animpeller vane extend ing from the periphery of said cylinder and. disposed spirally about the same, said vane provided in one face with a plurality of air pockets disposed radially of the axis of rotation of the end of the cylinder, a cup carried by the cylinder and rotatable therewith, means for supplying air to said shell forrotating said cylinder to v spmdle, and means for supplying air to the shell and oil to said spindle or discharging into said cup.

19. In combination with a tubular burner shell, a tubular spindle disposed longitudinally within the same, means for supplying air to the shell and oil to the spindle, a cup supporting and rotating cylinder rotatably mounted on said spindle, a. plurality of supportin bearings within said cylinder and carrie by said spindle, a cup in the outer end of said shell and threaded into the outer end of said cylinder, and an impeller vane carried b the periphery of the cylinder and extending spirally around the same for substantially its full length with its outer ed disposed in slight spaced relation to t 'e inner surface of the shell. i P

20. An' oil bfurner including a tubular air pipe, an oil cup rotatably mounted in the discharge end thereof and actuated by the air pressure within said pipe, an oil supply pipe discharging into said oil cup, a Valve in said air pipe, a valve in said oil pipe, and a connection between said valves whereby the same are simultaneously operated to proportionately increase or decrease the respective uid flows therethrough.

21. An oil burner including a furnace provided with a burner receiving opening and a damper controlled draft opening, an oil burner discharging into the burner receivin opening and including a valve control] air supply pipe, an oil on rotatably mounted in the discharge end t ereof' and actuated'by the air pressure in said pipe, a valve controlled oil supply pipe discharging into said cup, and a connection between the valves in said ipes and said draft damper whereby the t ree elements are adapted to be simultaneously operated to corres 0ndingly vary the fluid passing throug the openings controlled thereby. 22. An oil burner including a furnace provided with a burner receiving opening and a damper controlled draft opening, an

oil burner discharging into the burner receiving opening and including an air supply plpe, an 011 cup rotata-bl mounted in the discharge end thereof an actuated by .5 the air ressure in said pipe, a valve controlled o1l supply pipe discharging into said cup, and a connection between the valves in said oil pipe and said draft damper whereby the two elements are adapted to be simultaneously operated to correspondingly 10 vary the fluid passing through the openings controlled thereby.

In testimony whereof I have signed my name to this specification.

ISAAC M. SHARP. 

